For circles test, study:
a.  3 theorem proofs we did in class:
1.  In the same circle, congruent arcs have congruent chords.
2.  If two chords intersect in a circle, then the product of the lengths of the segments of one chord equals the product of the lengths of segments of the second chord.
3.  The measure of an angle formed by two chords intersecting inside a circle is one half the sum of the intercepted arc.

b.  all theorems and definitions in the chapter on circles
c.  hw and classwork problems, especially more difficult ones.
d.  special triangle ratios
e.  working with ratios.  
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